Home / 142,747.06-197,083.38-91,782.68

Finding the Fourth Proportional to 142,747.06, 197,083.38 and 91,782.68

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Solution

The fourth proportional to 142,747.06, 197,083.38 and 91,782.68 is: 126,719.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,747.06 : 197,083.38 = 91,782.68 : x
  2. Step 2: Convert to fraction form
    142,747.06/197,083.38 = 91,782.68/x
  3. Step 3: Cross multiply
    142,747.06x = 197,083.38 × 91,782.68
  4. Step 4: Simplify right side
    142,747.06x = 18,088,840,799.86
  5. Step 5: Solve for x
    x = 18,088,840,799.86/142,747.06
  6. Step 6: Final answer
    x = 126,719.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.